<template>
    <button class="g-button" :class="{[`icon-${iconPosition}`]:true}"
    @click="$emit('click')">
      <g-icon class="icon" v-if="icon && !loading" :name="icon"></g-icon>
      <g-icon class="loading icon" v-if="loading" name="loading"></g-icon>
      <div class="content">
        <slot></slot>
      </div>
    </button>
</template>


<script>
export default {
  // props: ["icon", "iconPosition"]
  props: {
    icon:{},
    loading:{
      type: Boolean,
      default: false
    },
    iconPosition:{
      type:String,
      default:'left'
    },
    validator (value){
      return value === "left" || value === "right"
    }
  }
};
</script>

<style lang="scss">
@keyframes spin {
  0%{
    transform:rotate(0deg);
  }

  100%{
    transform:rotate(360deg);
  }
}

.g-button {
  font-size: var(--font-size);
  height: var(--button-height);
  padding: 0 .8em;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background-color: var(--button-bg);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  vertical-align: middle;
  line-height: 1em;
  &:hover {
    border-color: var(--border-color-hover);
  }
  &:active {
    background-color: var(--button-active-bg);
  }
  &:focus {
    outline: none;
  }

  > .icon {
    order: 1; margin-right: .1em;
  }

  > .content {
    order: 2;
  }

  &.icon-right {
    > .icon {
      order: 2;margin-left: .1em;
    }
    > .content {
      order: 1;
    }
  }

  .loading{
    animation: spin 1s infinite linear;
  }
}
</style>

